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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <dlfcn.h>
#include <string.h>
#include <sys/stat.h>
#include <bluetooth/bluetooth.h>
#include <glib.h>
#include "plugin.h"
#include "log.h"
#include "hcid.h"
#include "btio.h"
static GSList *plugins = NULL;
struct bluetooth_plugin {
void *handle;
gboolean active;
struct bluetooth_plugin_desc *desc;
};
static gint compare_priority(gconstpointer a, gconstpointer b)
{
const struct bluetooth_plugin *plugin1 = a;
const struct bluetooth_plugin *plugin2 = b;
return plugin2->desc->priority - plugin1->desc->priority;
}
static gboolean add_plugin(void *handle, struct bluetooth_plugin_desc *desc)
{
struct bluetooth_plugin *plugin;
if (desc->init == NULL)
return FALSE;
if (g_str_equal(desc->version, VERSION) == FALSE) {
error("Version mismatch for %s", desc->name);
return FALSE;
}
DBG("Loading %s plugin", desc->name);
plugin = g_try_new0(struct bluetooth_plugin, 1);
if (plugin == NULL)
return FALSE;
plugin->handle = handle;
plugin->active = FALSE;
plugin->desc = desc;
plugins = g_slist_insert_sorted(plugins, plugin, compare_priority);
return TRUE;
}
static gboolean enable_plugin(const char *name, char **conf_disable,
char **cli_enable, char **cli_disable)
{
if (conf_disable) {
for (; *conf_disable; conf_disable++)
if (g_pattern_match_simple(*conf_disable, name))
break;
if (*conf_disable) {
info("Excluding (conf) %s", name);
return FALSE;
}
}
if (cli_disable) {
for (; *cli_disable; cli_disable++)
if (g_pattern_match_simple(*cli_disable, name))
break;
if (*cli_disable) {
info("Excluding (cli) %s", name);
return FALSE;
}
}
if (cli_enable) {
for (; *cli_enable; cli_enable++)
if (g_pattern_match_simple(*cli_enable, name))
break;
if (!*cli_enable) {
info("Ignoring (cli) %s", name);
return FALSE;
}
}
return TRUE;
}
#include "builtin.h"
gboolean plugin_init(GKeyFile *config, const char *enable, const char *disable)
{
GSList *list;
GDir *dir;
const gchar *file;
char **conf_disabled, **cli_disabled, **cli_enabled;
unsigned int i;
/* Make a call to BtIO API so its symbols got resolved before the
* plugins are loaded. */
bt_io_error_quark();
if (config)
conf_disabled = g_key_file_get_string_list(config, "General",
"DisablePlugins",
NULL, NULL);
else
conf_disabled = NULL;
if (enable)
cli_enabled = g_strsplit_set(enable, ", ", -1);
else
cli_enabled = NULL;
if (disable)
cli_disabled = g_strsplit_set(disable, ", ", -1);
else
cli_disabled = NULL;
DBG("Loading builtin plugins");
for (i = 0; __bluetooth_builtin[i]; i++) {
if (!enable_plugin(__bluetooth_builtin[i]->name, conf_disabled,
cli_enabled, cli_disabled))
continue;
add_plugin(NULL, __bluetooth_builtin[i]);
}
if (strlen(PLUGINDIR) == 0)
goto start;
DBG("Loading plugins %s", PLUGINDIR);
dir = g_dir_open(PLUGINDIR, 0, NULL);
if (!dir)
goto start;
while ((file = g_dir_read_name(dir)) != NULL) {
struct bluetooth_plugin_desc *desc;
void *handle;
gchar *filename;
if (g_str_has_prefix(file, "lib") == TRUE ||
g_str_has_suffix(file, ".so") == FALSE)
continue;
filename = g_build_filename(PLUGINDIR, file, NULL);
handle = dlopen(filename, RTLD_NOW);
if (handle == NULL) {
error("Can't load plugin %s: %s", filename,
dlerror());
g_free(filename);
continue;
}
g_free(filename);
desc = dlsym(handle, "bluetooth_plugin_desc");
if (desc == NULL) {
error("Can't load plugin description: %s", dlerror());
dlclose(handle);
continue;
}
if (!enable_plugin(desc->name, conf_disabled,
cli_enabled, cli_disabled)) {
dlclose(handle);
continue;
}
if (add_plugin(handle, desc) == FALSE)
dlclose(handle);
}
g_dir_close(dir);
start:
for (list = plugins; list; list = list->next) {
struct bluetooth_plugin *plugin = list->data;
if (plugin->desc->init() < 0) {
error("Failed to init %s plugin", plugin->desc->name);
continue;
}
plugin->active = TRUE;
}
g_strfreev(conf_disabled);
g_strfreev(cli_enabled);
g_strfreev(cli_disabled);
return TRUE;
}
void plugin_cleanup(void)
{
GSList *list;
DBG("Cleanup plugins");
for (list = plugins; list; list = list->next) {
struct bluetooth_plugin *plugin = list->data;
if (plugin->active == TRUE && plugin->desc->exit)
plugin->desc->exit();
if (plugin->handle != NULL)
dlclose(plugin->handle);
g_free(plugin);
}
g_slist_free(plugins);
}
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